The frameless balcony window is made of high security tempered glass, and the corresponding hardware is combined with a large-section aluminum alloy structure. Its design enables each window to be moved to the left and right, and can also be arranged 90-inch by block, and the entire balcony window Can be fully open according to the needs of users, but also all closed, fully retain the balcony features and functions. It can be very effective in blocking wind and rain, blocking dust and noise, and a reasonable structure that enables the windows to open inwards. It is not necessary to open the window out of the body and it is safe and simple to clean.